骨粗鬆症性椎体骨折に対する人工骨を用いた椎体再建術の経験

抄録

We evaluated the effectiveness of transpedicular injection of bioactive calcium phosphate cement (CPC) or hydroxyapatite block (HA block) into the vertebral body for the repair of osteoporotic vertebral fracture. We used HA block in one case and in the other three cases, HA block or CPC with postero-lateral fusion using a pedicle screw. Clinical evaluation was carried out according to the Frankel grading and neurological improvement was seen in all cases. The kyphotic angle improved from 27.3 degrees before surgery to 2.5 degrees after surgery, but correction loss occurred 11.3 degrees at final follow-up of an average of 17 months after surgery. Transpedicular injection of bioactive CPC or HA block into the vertebral body using a pedicle screw is useful for repairing osteoporotic vertebral fracture.